W48C111-17 Datasheet, PDF (4/7 Pages) Cypress Semiconductor – 100-MHz Mobile Motherboard System Clock

PRELIMINARY
W48C111-17
Absolute Maximum Ratings
Stresses greater than those listed in this table may cause per-
manent damage to the device. These represent a stress rating
only. Operation of the device at these or any other conditions
above those specified in the operating sections of this specifi-
cation is not implied. Maximum conditions for extended peri-
ods may affect reliability.
Parameter
V_DD, V_IN
T_STG
T_A
T_B
ESD_PROT
Description
Voltage on any pin with respect to GND
Storage Temperature
Operating Temperature
Ambient Temperature under Bias
Input ESD Protection
Rating
Unit
–0.5 to +7.0
V
–65 to +150
°C
0 to +70
°C
–55 to +125
°C
2 (min.)
kV
DC Electrical Characteristics: T_A = 0°C to +70°C, V_DDQ3 = 3.3V±5%, V_DDQ2 = 2.5V±5%, CPU0:1 = 66.6/100 MHz
Parameter
Description
Test Condition
Min. Typ. Max. Unit
Supply Current
I_DD
3.3V Supply Current
I_DD2.5
2.5V Supply Current
Logic Inputs
Outputs Loaded^[1]
Outputs Loaded^[1]
75
mA
50
mA
V_IL
Input Low Voltage
V_IH
Input High Voltage
I_IL
Input Low Current^[2]
I_IH
Input High Current^[2]
I_IL
Input Low Current (SEL100/66#)
I_IH
Input High Current (SEL100/66#)
Clock Outputs
GND – 0.3
2.0
0.8
V
V_DD + 0.3 V
–25
µA
10
µA
–5
µA
5
µA
V_OL
Output Low Voltage
I_OL = 1 mA
50
mV
V_OH
Output High Voltage
I_OH = –1 mA
3.1
V
V_OH
Output High Voltage
CPU0:1
I_OH = –1 mA
2.2
V
I_OL
Output Low Current
CPU0:1
V_OL = 1.25V
55
115
190
mA
PCI1:5, _F
V_OL = 1.5V
20.5
53
139
mA
REF
V_OL = 1.5V
25
37
76
mA
I_OH
Output High Current
CPU0:1
V_OL = 1.25V
50
110
195
mA
PCI1:5, _F
V_OL = 1.5V
31
55
189
mA
REFX
V_OL = 1.5V
27
44
94
mA
Crystal Oscillator
V_TH
X1 Input Threshold Voltage^[3]
V_DDQ3 = 3.3V
1.65
V
C_LOAD
Load Capacitance, as seen by External Crystal^[4]
14
pF
C_IN,X1
X1 Input Capacitance^[5]
Pin X2 unconnected
28
pF
Pin Capacitance/Inductance
C_IN
Input Pin Capacitance
Except X1 and X2
5
pF
C_OUT
Output Pin Capacitance
6
pF
L_IN
Input Pin Inductance
7
nH
Notes:
1. All clock outputs loaded with 6" 60Ω transmission lines with 20-pF capacitors.
2. CPU_STOP#, PCI_STOP#, and PWRDWN# logic inputs have internal pull-up resistors.
3. X1 input threshold voltage (typical) is V_DD/2.
4. The W48C111-17 contains an internal crystal load capacitor between pin X1 and ground and another between pin X2 and ground. Total load placed on crystal
is 14 pF; this includes typical stray capacitance of short PCB traces to crystal.
5. X1 input capacitance is applicable when driving X1 with an external clock source (X2 is left unconnected).
4